|Strength||Incapable (removed before strength was introduced)|
Witness-chan wore the default female school uniform.
Witness-chan first appeared in the "How to Get Away with Murder in Yandere Simulator" video. In the video, she witnesses Victim-chan being murdered by Yandere-chan. She then ran out of the school and called the police. She is later murdered by Yandere-chan and left on school grounds, along with other evidence. This causes Yandere-chan to be arrested by the police due to the murder she committed without disposing of the evidence.
She briefly appeared later in the January Osana Progress Report - Part 1 and Making Senpai Reject A Love Confession In Yandere Simulator videos, where she witnesses Yandere-chan poisoning Osana Najimi's bentos.
Witness-chan had the Coward persona, which has been renamed into the Loner persona on December 1st, 2015. As of February 1st, 2016, the Coward persona has been added back into the game, but with a different function.
Witness-chan had a different routine from all the other students, being placed at the front of the school so she would be able to see Victim-chan's death. Her routine includes standing in a corner where she could witness Victim-chan being murdered.
Along with Victim-chan, Witness-chan was fully removed from the game. YandereDev has said they were removed because they only existed for the sake of demonstrating a gameplay feature in one video and that they weren't fully fleshed out characters. While not being able to find either of them in the game, their existence can be proven by looking at the JSON file from some old builds (from March 1st, 2015 to April 8th, 2015) and in the video, "How To Get Away With Murder In Yandere Simulator".
It is impossible to meet both of them in the game because they are already removed.
- Witness-chan's expression was the first to be traumatic, after seeing the murder.
- Although she was removed before strength was introduced, it can be guessed that she was incapable, because Yandere-chan was able to easily killing her.
- YandereDev may add her along with Victim-chan back in the final version of the game, because he's planning to have at least 100 students.
- However, it is extremely unlikely, as she was never meant to be perceived as a real character.
|“||Oh my god! This can't be happening!||”|
— Witness-chan witnesses Yandere-chan murder Victim-chan.
|“||Stay away from me!||”|
— Witness-chan fleeing the school.
|“||What are you -||”|
— Being murdered by Yandere-chan